title: Hemilaminectomy approach combined with in situ restoration of vertebral laminae for thoracic intraspinal tumors.
abstract: OBJECTIVE
  This study aims to evaluate the hemilaminectomy approach and in situ restoration of vertebral laminae in microsurgery for thoracic intraspinal tumors.
  
  
  METHODS
  Sixteen patients with thoracic intraspinal tumors, consisting of 6 males and 10 females with a mean age of 47.5±16.4 years ranging from 21 to 71 years, underwent surgical treatment with hemilaminectomy approach and in situ restoration of vertebral laminae. All patients were followed up after surgery for 12 to 30 months, involving Frankel grade, spinal instability, and deformity.
  
  
  RESULTS
  Mean operation time was 119.5±23.0 minutes. Laminotomy was performed with one vertebral plate in 2 cases, two vertebral plates in 12 cases, and three vertebral plates in 2 cases. Postoperative three-dimensional CT scanning revealed a stable bony reconstruction, and no cerebrospinal fluid leakage or subcutaneous hydrops. Surgical pathology was consistent with preoperative MRI diagnosis. With respect to neurological status, the percentage of good Frankel scale was markedly improved from 37.5% on admission to 81.3% at follow-up (p < 0.05). None of the subjects showed spinal deformity or instability.
  
  
  CONCLUSIONS
  In situ restoration of vertebral laminae maximally preserves the spinal integrity and stability, and reduces postoperative complications including cerebrospinal fluid leakage, pseudomeningocele, spinal deformity, and instability.
authors.affiliation: Third Affiliated Hospital of Sun Yat-Sen University, Department of Neurosurgery, Guangzhou, China.
authors.forename: Wen-Sheng
authors.initials: WS
authors.lastname: Li
authors.forename: Chuan
authors.initials: C
authors.lastname: Chen
authors.forename: Hui
authors.initials: H
authors.lastname: Wang
authors.forename: Chao-Feng
authors.initials: CF
authors.lastname: Liang
authors.forename: Lun
authors.initials: L
authors.lastname: Luo
authors.forename: Ying
authors.initials: Y
authors.lastname: Guo
mesh_terms: D000328:Adult; D000368:Aged; D001860:Bone Plates; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007796:Laminectomy / Q000379:methods*; D008279:Magnetic Resonance Imaging; D008297:Male; D008579:Meningioma / Q000601:surgery; D008866:Microsurgery / Q000379:methods*; D008875:Middle Aged; D009442:Neurilemmoma / Q000601:surgery; D009460:Neurologic Examination; D011183:Postoperative Complications / Q000453:epidemiology / Q000628:therapy; D013125:Spinal Neoplasms / Q000601:surgery*; D013131:Spine / Q000601:surgery*; D014025:Titanium; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome; D055815:Young Adult
chemical_list: D014025:Titanium